static GstStateChangeReturn opus_dec_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret; GstOpusDec *dec = GST_OPUS_DEC (element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: case GST_STATE_CHANGE_READY_TO_PAUSED: case GST_STATE_CHANGE_PAUSED_TO_PLAYING: default: break; } ret = parent_class->change_state (element, transition); if (ret != GST_STATE_CHANGE_SUCCESS) return ret; switch (transition) { case GST_STATE_CHANGE_PLAYING_TO_PAUSED: break; case GST_STATE_CHANGE_PAUSED_TO_READY: gst_opus_dec_reset (dec); break; case GST_STATE_CHANGE_READY_TO_NULL: break; default: break; } return ret; }
static gboolean opus_dec_sink_query (GstPad * pad, GstQuery * query) { GstOpusDec *dec; gboolean res; dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONVERT: { GstFormat src_fmt, dest_fmt; gint64 src_val, dest_val; gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); res = opus_dec_convert (pad, src_fmt, src_val, &dest_fmt, &dest_val); if (res) { gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); } break; } default: res = gst_pad_query_default (pad, query); break; } gst_object_unref (dec); return res; }
static gboolean gst_opus_dec_stop (GstAudioDecoder * dec) { GstOpusDec *odec = GST_OPUS_DEC (dec); gst_opus_dec_reset (odec); return TRUE; }
static gboolean opus_dec_src_query (GstPad * pad, GstQuery * query) { GstOpusDec *dec; gboolean res = FALSE; dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_POSITION:{ GstSegment segment; GstFormat format; gint64 cur; gst_query_parse_position (query, &format, NULL); GST_PAD_STREAM_LOCK (dec->sinkpad); segment = dec->segment; GST_PAD_STREAM_UNLOCK (dec->sinkpad); if (segment.format != GST_FORMAT_TIME) { GST_DEBUG_OBJECT (dec, "segment not initialised yet"); break; } if ((res = opus_dec_convert (dec->srcpad, GST_FORMAT_TIME, segment.last_stop, &format, &cur))) { gst_query_set_position (query, format, cur); } break; } case GST_QUERY_DURATION:{ GstFormat format = GST_FORMAT_TIME; gint64 dur; /* get duration from demuxer */ if (!gst_pad_query_peer_duration (dec->sinkpad, &format, &dur)) break; gst_query_parse_duration (query, &format, NULL); /* and convert it into the requested format */ if ((res = opus_dec_convert (dec->srcpad, GST_FORMAT_TIME, dur, &format, &dur))) { gst_query_set_duration (query, format, dur); } break; } default: res = gst_pad_query_default (pad, query); break; } gst_object_unref (dec); return res; }
static gboolean opus_dec_sink_setcaps (GstPad * pad, GstCaps * caps) { GstOpusDec *dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); gboolean ret = TRUE; GstStructure *s; const GValue *streamheader; s = gst_caps_get_structure (caps, 0); if ((streamheader = gst_structure_get_value (s, "streamheader")) && G_VALUE_HOLDS (streamheader, GST_TYPE_ARRAY) && gst_value_array_get_size (streamheader) >= 2) { const GValue *header; GstBuffer *buf; GstFlowReturn res = GST_FLOW_OK; header = gst_value_array_get_value (streamheader, 0); if (header && G_VALUE_HOLDS (header, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (header); res = opus_dec_chain_parse_header (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->streamheader, buf); } #if 0 vorbiscomment = gst_value_array_get_value (streamheader, 1); if (vorbiscomment && G_VALUE_HOLDS (vorbiscomment, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (vorbiscomment); res = opus_dec_chain_parse_comments (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->vorbiscomment, buf); } #endif g_list_foreach (dec->extra_headers, (GFunc) gst_mini_object_unref, NULL); g_list_free (dec->extra_headers); dec->extra_headers = NULL; if (gst_value_array_get_size (streamheader) > 2) { gint i, n; n = gst_value_array_get_size (streamheader); for (i = 2; i < n; i++) { header = gst_value_array_get_value (streamheader, i); buf = gst_value_get_buffer (header); dec->extra_headers = g_list_prepend (dec->extra_headers, gst_buffer_ref (buf)); } } } done: gst_object_unref (dec); return ret; }
static gboolean opus_dec_src_event (GstPad * pad, GstEvent * event) { gboolean res = FALSE; GstOpusDec *dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); GST_LOG_OBJECT (dec, "handling %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK:{ GstFormat format, tformat; gdouble rate; GstEvent *real_seek; GstSeekFlags flags; GstSeekType cur_type, stop_type; gint64 cur, stop; gint64 tcur, tstop; gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop); /* we have to ask our peer to seek to time here as we know * nothing about how to generate a granulepos from the src * formats or anything. * * First bring the requested format to time */ tformat = GST_FORMAT_TIME; if (!(res = opus_dec_convert (pad, format, cur, &tformat, &tcur))) break; if (!(res = opus_dec_convert (pad, format, stop, &tformat, &tstop))) break; /* then seek with time on the peer */ real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME, flags, cur_type, tcur, stop_type, tstop); GST_LOG_OBJECT (dec, "seek to %" GST_TIME_FORMAT, GST_TIME_ARGS (tcur)); res = gst_pad_push_event (dec->sinkpad, real_seek); gst_event_unref (event); break; } default: res = gst_pad_event_default (pad, event); break; } gst_object_unref (dec); return res; }
static gboolean gst_opus_dec_start (GstAudioDecoder * dec) { GstOpusDec *odec = GST_OPUS_DEC (dec); gst_opus_dec_reset (odec); /* we know about concealment */ gst_audio_decoder_set_plc_aware (dec, TRUE); if (odec->use_inband_fec) { gst_audio_decoder_set_latency (dec, 2 * GST_MSECOND + GST_MSECOND / 2, 120 * GST_MSECOND); } return TRUE; }
static void gst_opus_dec_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstOpusDec *dec = GST_OPUS_DEC (object); switch (prop_id) { case PROP_USE_INBAND_FEC: dec->use_inband_fec = g_value_get_boolean (value); break; case PROP_APPLY_GAIN: dec->apply_gain = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }
static gboolean gst_opus_dec_start (GstAudioDecoder * dec) { GstOpusDec *odec = GST_OPUS_DEC (dec); gst_opus_dec_reset (odec); /* we know about concealment */ gst_audio_decoder_set_plc_aware (dec, TRUE); if (odec->use_inband_fec) { /* opusdec outputs samples directly from an input buffer, except if * FEC is on, in which case it buffers one buffer in case one buffer * goes missing. */ gst_audio_decoder_set_latency (dec, 120 * GST_MSECOND, 120 * GST_MSECOND); } return TRUE; }
static gboolean gst_opus_dec_set_format (GstAudioDecoder * bdec, GstCaps * caps) { GstOpusDec *dec = GST_OPUS_DEC (bdec); gboolean ret = TRUE; GstStructure *s; const GValue *streamheader; GST_DEBUG_OBJECT (dec, "set_format: %" GST_PTR_FORMAT, caps); s = gst_caps_get_structure (caps, 0); if ((streamheader = gst_structure_get_value (s, "streamheader")) && G_VALUE_HOLDS (streamheader, GST_TYPE_ARRAY) && gst_value_array_get_size (streamheader) >= 2) { const GValue *header, *vorbiscomment; GstBuffer *buf; GstFlowReturn res = GST_FLOW_OK; header = gst_value_array_get_value (streamheader, 0); if (header && G_VALUE_HOLDS (header, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (header); res = gst_opus_dec_parse_header (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->streamheader, buf); } vorbiscomment = gst_value_array_get_value (streamheader, 1); if (vorbiscomment && G_VALUE_HOLDS (vorbiscomment, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (vorbiscomment); res = gst_opus_dec_parse_comments (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->vorbiscomment, buf); } } done: return ret; }
static GstFlowReturn opus_dec_chain (GstPad * pad, GstBuffer * buf) { GstFlowReturn res; GstOpusDec *dec; dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); if (GST_BUFFER_IS_DISCONT (buf)) { dec->discont = TRUE; } res = opus_dec_chain_parse_data (dec, buf, GST_BUFFER_TIMESTAMP (buf), GST_BUFFER_DURATION (buf)); //done: dec->packetno++; gst_buffer_unref (buf); gst_object_unref (dec); return res; }
static GstFlowReturn gst_opus_dec_handle_frame (GstAudioDecoder * adec, GstBuffer * buf) { GstFlowReturn res; GstOpusDec *dec; /* no fancy draining */ if (G_UNLIKELY (!buf)) return GST_FLOW_OK; dec = GST_OPUS_DEC (adec); GST_LOG_OBJECT (dec, "Got buffer ts %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf))); /* If we have the streamheader and vorbiscomment from the caps already * ignore them here */ if (dec->streamheader && dec->vorbiscomment) { if (memcmp_buffers (dec->streamheader, buf)) { GST_DEBUG_OBJECT (dec, "found streamheader"); gst_audio_decoder_finish_frame (adec, NULL, 1); res = GST_FLOW_OK; } else if (memcmp_buffers (dec->vorbiscomment, buf)) { GST_DEBUG_OBJECT (dec, "found vorbiscomments"); gst_audio_decoder_finish_frame (adec, NULL, 1); res = GST_FLOW_OK; } else { res = opus_dec_chain_parse_data (dec, buf); } } else { /* Otherwise fall back to packet counting and assume that the * first two packets might be the headers, checking magic. */ switch (dec->packetno) { case 0: if (gst_opus_header_is_header (buf, "OpusHead", 8)) { GST_DEBUG_OBJECT (dec, "found streamheader"); res = gst_opus_dec_parse_header (dec, buf); gst_audio_decoder_finish_frame (adec, NULL, 1); } else { res = opus_dec_chain_parse_data (dec, buf); } break; case 1: if (gst_opus_header_is_header (buf, "OpusTags", 8)) { GST_DEBUG_OBJECT (dec, "counted vorbiscomments"); res = gst_opus_dec_parse_comments (dec, buf); gst_audio_decoder_finish_frame (adec, NULL, 1); } else { res = opus_dec_chain_parse_data (dec, buf); } break; default: { res = opus_dec_chain_parse_data (dec, buf); break; } } } dec->packetno++; return res; }
static gboolean gst_opus_dec_set_format (GstAudioDecoder * bdec, GstCaps * caps) { GstOpusDec *dec = GST_OPUS_DEC (bdec); gboolean ret = TRUE; GstStructure *s; const GValue *streamheader; GstCaps *old_caps; GST_DEBUG_OBJECT (dec, "set_format: %" GST_PTR_FORMAT, caps); if ((old_caps = gst_pad_get_current_caps (GST_AUDIO_DECODER_SINK_PAD (bdec)))) { if (gst_caps_is_equal (caps, old_caps)) { gst_caps_unref (old_caps); GST_DEBUG_OBJECT (dec, "caps didn't change"); goto done; } GST_DEBUG_OBJECT (dec, "caps have changed, resetting decoder"); gst_opus_dec_reset (dec); gst_caps_unref (old_caps); } s = gst_caps_get_structure (caps, 0); if ((streamheader = gst_structure_get_value (s, "streamheader")) && G_VALUE_HOLDS (streamheader, GST_TYPE_ARRAY) && gst_value_array_get_size (streamheader) >= 2) { const GValue *header, *vorbiscomment; GstBuffer *buf; GstFlowReturn res = GST_FLOW_OK; header = gst_value_array_get_value (streamheader, 0); if (header && G_VALUE_HOLDS (header, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (header); res = gst_opus_dec_parse_header (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->streamheader, buf); } vorbiscomment = gst_value_array_get_value (streamheader, 1); if (vorbiscomment && G_VALUE_HOLDS (vorbiscomment, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (vorbiscomment); res = gst_opus_dec_parse_comments (dec, buf); if (res != GST_FLOW_OK) goto done; gst_buffer_replace (&dec->vorbiscomment, buf); } } else { /* defaults if not in the caps */ dec->n_channels = 2; dec->sample_rate = 48000; gst_structure_get_int (s, "channels", &dec->n_channels); gst_structure_get_int (s, "rate", &dec->sample_rate); /* default stereo mapping */ dec->channel_mapping_family = 0; dec->channel_mapping[0] = 0; dec->channel_mapping[1] = 1; dec->n_streams = 1; dec->n_stereo_streams = 1; gst_opus_dec_negotiate (dec, NULL); } done: return ret; }
static gboolean gst_opus_dec_set_format (GstAudioDecoder * bdec, GstCaps * caps) { GstOpusDec *dec = GST_OPUS_DEC (bdec); gboolean ret = TRUE; GstStructure *s; const GValue *streamheader; GstCaps *old_caps; GST_DEBUG_OBJECT (dec, "set_format: %" GST_PTR_FORMAT, caps); if ((old_caps = gst_pad_get_current_caps (GST_AUDIO_DECODER_SINK_PAD (bdec)))) { if (gst_caps_is_equal (caps, old_caps)) { gst_caps_unref (old_caps); GST_DEBUG_OBJECT (dec, "caps didn't change"); goto done; } GST_DEBUG_OBJECT (dec, "caps have changed, resetting decoder"); gst_opus_dec_reset (dec); gst_caps_unref (old_caps); } s = gst_caps_get_structure (caps, 0); if ((streamheader = gst_structure_get_value (s, "streamheader")) && G_VALUE_HOLDS (streamheader, GST_TYPE_ARRAY) && gst_value_array_get_size (streamheader) >= 2) { const GValue *header, *vorbiscomment; GstBuffer *buf; GstFlowReturn res = GST_FLOW_OK; header = gst_value_array_get_value (streamheader, 0); if (header && G_VALUE_HOLDS (header, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (header); res = gst_opus_dec_parse_header (dec, buf); if (res != GST_FLOW_OK) { ret = FALSE; goto done; } gst_buffer_replace (&dec->streamheader, buf); } vorbiscomment = gst_value_array_get_value (streamheader, 1); if (vorbiscomment && G_VALUE_HOLDS (vorbiscomment, GST_TYPE_BUFFER)) { buf = gst_value_get_buffer (vorbiscomment); res = gst_opus_dec_parse_comments (dec, buf); if (res != GST_FLOW_OK) { ret = FALSE; goto done; } gst_buffer_replace (&dec->vorbiscomment, buf); } } else { const GstAudioChannelPosition *posn = NULL; if (!gst_codec_utils_opus_parse_caps (caps, &dec->sample_rate, &dec->n_channels, &dec->channel_mapping_family, &dec->n_streams, &dec->n_stereo_streams, dec->channel_mapping)) { ret = FALSE; goto done; } if (dec->channel_mapping_family == 1 && dec->n_channels <= 8) posn = gst_opus_channel_positions[dec->n_channels - 1]; if (!gst_opus_dec_negotiate (dec, posn)) return FALSE; } done: return ret; }
static gboolean opus_dec_sink_event (GstPad * pad, GstEvent * event) { GstOpusDec *dec; gboolean ret = FALSE; dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); GST_LOG_OBJECT (dec, "handling %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NEWSEGMENT:{ GstFormat format; gdouble rate, arate; gint64 start, stop, time; gboolean update; gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format, &start, &stop, &time); if (format != GST_FORMAT_TIME) goto newseg_wrong_format; if (rate <= 0.0) goto newseg_wrong_rate; if (update) { /* time progressed without data, see if we can fill the gap with * some concealment data */ if (dec->segment.last_stop < start) { GstClockTime duration; duration = start - dec->segment.last_stop; opus_dec_chain_parse_data (dec, NULL, dec->segment.last_stop, duration); } } /* now configure the values */ gst_segment_set_newsegment_full (&dec->segment, update, rate, arate, GST_FORMAT_TIME, start, stop, time); dec->granulepos = -1; GST_DEBUG_OBJECT (dec, "segment now: cur = %" GST_TIME_FORMAT " [%" GST_TIME_FORMAT " - %" GST_TIME_FORMAT "]", GST_TIME_ARGS (dec->segment.last_stop), GST_TIME_ARGS (dec->segment.start), GST_TIME_ARGS (dec->segment.stop)); ret = gst_pad_push_event (dec->srcpad, event); break; } default: ret = gst_pad_event_default (pad, event); break; } gst_object_unref (dec); return ret; /* ERRORS */ newseg_wrong_format: { GST_DEBUG_OBJECT (dec, "received non TIME newsegment"); gst_object_unref (dec); return FALSE; } newseg_wrong_rate: { GST_DEBUG_OBJECT (dec, "negative rates not supported yet"); gst_object_unref (dec); return FALSE; } }
static gboolean opus_dec_convert (GstPad * pad, GstFormat src_format, gint64 src_value, GstFormat * dest_format, gint64 * dest_value) { gboolean res = TRUE; GstOpusDec *dec; guint64 scale = 1; dec = GST_OPUS_DEC (gst_pad_get_parent (pad)); if (dec->packetno < 1) { res = FALSE; goto cleanup; } if (src_format == *dest_format) { *dest_value = src_value; res = TRUE; goto cleanup; } if (pad == dec->sinkpad && (src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES)) { res = FALSE; goto cleanup; } switch (src_format) { case GST_FORMAT_TIME: switch (*dest_format) { case GST_FORMAT_BYTES: scale = sizeof (gint16) * dec->n_channels; case GST_FORMAT_DEFAULT: *dest_value = gst_util_uint64_scale_int (scale * src_value, dec->sample_rate, GST_SECOND); break; default: res = FALSE; break; } break; case GST_FORMAT_DEFAULT: switch (*dest_format) { case GST_FORMAT_BYTES: *dest_value = src_value * sizeof (gint16) * dec->n_channels; break; case GST_FORMAT_TIME: *dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND, dec->sample_rate); break; default: res = FALSE; break; } break; case GST_FORMAT_BYTES: switch (*dest_format) { case GST_FORMAT_DEFAULT: *dest_value = src_value / (sizeof (gint16) * dec->n_channels); break; case GST_FORMAT_TIME: *dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND, dec->sample_rate * sizeof (gint16) * dec->n_channels); break; default: res = FALSE; break; } break; default: res = FALSE; break; } cleanup: gst_object_unref (dec); return res; }